Ｌ／Ｃ上的单证要求有受益人声明直接寄了全套不可议付的单据给开证人．

beneficiary’s certificate stating that one set of non-negotitable shipping documents have been sent directly to the applicant .这里的non-negotitable shipping documents

指的什么，具体包括哪些单证？

full set of original clean on board marine bills of lading ,plus two non-negotiable copies,made out to order and blank endorsed这里的non-negotiable copies指的又是什么？一般提单三正三副都是直接交到银行的，这里的ＣＯＰＩＥＳ指的正本的复印件，还是什么？